Question

consider the following data representing the price of laptop computers (in dollars).
1111, 1253, 1157, 1181, 1212, 1088, 1307, 1243, 1360, 1216, 1078, 1237, 1136, 1190, 1235, 1204, 1186, 1258, 1348, 1184
price of laptop computers (in dollars)

class	frequency	relative frequency	cumulative frequency
1121-1170
1171-1220
1221-1270
1271-1320
1321-1370

step 1 of 4: determine the class width of the classes listed in the frequency table.

Explanation:

Step1: Identify class bounds

Take first class: 1071 (lower), 1120 (upper)

Step2: Calculate class width

Subtract lower from upper, add 1.
$\text{Class Width} = 1120 - 1071 + 1$

Step3: Compute the result

$1120 - 1071 + 1 = 50$

Answer:

50